560 lines
23 KiB
EmacsLisp
560 lines
23 KiB
EmacsLisp
;;; magit-apply.el --- apply Git diffs -*- lexical-binding: t -*-
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;; Copyright (C) 2010-2016 The Magit Project Contributors
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;;
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;; You should have received a copy of the AUTHORS.md file which
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;; lists all contributors. If not, see http://magit.vc/authors.
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;; Author: Jonas Bernoulli <jonas@bernoul.li>
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;; Maintainer: Jonas Bernoulli <jonas@bernoul.li>
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;; Magit is free software; you can redistribute it and/or modify it
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;; under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 3, or (at your option)
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;; any later version.
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;;
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;; Magit is distributed in the hope that it will be useful, but WITHOUT
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;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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;; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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;; License for more details.
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;;
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;; You should have received a copy of the GNU General Public License
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;; along with Magit. If not, see http://www.gnu.org/licenses.
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;;; Commentary:
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;; This library implements commands for applying Git diffs or parts
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;; of such a diff. The supported "apply variants" are apply, stage,
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;; unstage, discard, and reverse - more than Git itself knows about,
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;; at least at the porcelain level.
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;;; Code:
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(require 'magit-core)
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(require 'magit-diff)
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(require 'magit-wip)
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;; For `magit-apply'
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(declare-function magit-anti-stage 'magit-rockstar)
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(declare-function magit-am-popup 'magit-sequence)
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;; For `magit-discard-files'
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(declare-function magit-checkout-stage 'magit)
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(declare-function magit-checkout-read-stage 'magit)
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(defvar auto-revert-verbose)
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(require 'dired)
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;;; Options
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(defcustom magit-delete-by-moving-to-trash t
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"Whether Magit uses the system's trash can."
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:package-version '(magit . "2.1.0")
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:group 'magit
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:type 'boolean)
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(defcustom magit-unstage-committed t
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"Whether unstaging a committed change reverts it instead.
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A committed change cannot be unstaged, because staging and
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unstaging are actions that are concern with the differences
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between the index and the working tree, not with committed
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changes.
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If this option is non-nil (the default), then typing \"u\"
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(`magit-unstage') on a committed change, causes it to be
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reversed in the index but not the working tree. For more
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information see command `magit-reverse-in-index'."
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:package-version '(magit . "2.4.1")
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:group 'magit-commands
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:type 'boolean)
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;;; Commands
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;;;; Apply
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(defun magit-apply (&rest args)
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"Apply the change at point.
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With a prefix argument and if necessary, attempt a 3-way merge."
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(interactive (and current-prefix-arg (list "--3way")))
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(--when-let (magit-apply--get-selection)
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(pcase (list (magit-diff-type) (magit-diff-scope))
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(`(,(or `unstaged `staged) ,_)
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(user-error "Change is already in the working tree"))
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(`(untracked ,(or `file `files))
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(magit-am-popup))
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(`(,_ region) (magit-apply-region it args))
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(`(,_ hunk) (magit-apply-hunk it args))
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(`(,_ hunks) (magit-apply-hunks it args))
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(`(,_ file) (magit-apply-diff it args))
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(`(,_ files) (magit-apply-diffs it args)))))
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(defun magit-apply-diffs (sections &rest args)
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(setq sections (magit-apply--get-diffs sections))
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(magit-apply-patch sections args
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(mapconcat
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(lambda (s)
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(concat (magit-diff-file-header s)
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(buffer-substring (magit-section-content s)
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(magit-section-end s))))
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sections "")))
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(defun magit-apply-diff (section &rest args)
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(setq section (car (magit-apply--get-diffs (list section))))
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(magit-apply-patch section args
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(concat (magit-diff-file-header section)
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(buffer-substring (magit-section-content section)
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(magit-section-end section)))))
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(defun magit-apply-hunks (sections &rest args)
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(let ((section (magit-section-parent (car sections))))
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(when (string-match "^diff --cc" (magit-section-value section))
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(user-error "Cannot un-/stage resolution hunks. Stage the whole file"))
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(magit-apply-patch section args
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(concat (magit-section-diff-header section)
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(mapconcat
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(lambda (s)
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(buffer-substring (magit-section-start s)
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(magit-section-end s)))
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sections "")))))
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(defun magit-apply-hunk (section &rest args)
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(when (string-match "^diff --cc" (magit-section-parent-value section))
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(user-error "Cannot un-/stage resolution hunks. Stage the whole file"))
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(magit-apply-patch (magit-section-parent section) args
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(concat (magit-diff-file-header section)
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(buffer-substring (magit-section-start section)
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(magit-section-end section)))))
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(defun magit-apply-region (section &rest args)
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(unless (magit-diff-context-p)
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(user-error "Not enough context to apply region. Increase the context"))
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(when (string-match "^diff --cc" (magit-section-parent-value section))
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(user-error "Cannot un-/stage resolution hunks. Stage the whole file"))
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(magit-apply-patch (magit-section-parent section) args
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(concat (magit-diff-file-header section)
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(magit-diff-hunk-region-patch section args))))
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(defun magit-apply-patch (section:s args patch)
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(let* ((files (if (atom section:s)
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(list (magit-section-value section:s))
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(mapcar 'magit-section-value section:s)))
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(command (symbol-name this-command))
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(command (if (and command (string-match "^magit-\\([^-]+\\)" command))
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(match-string 1 command)
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"apply")))
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(when (and magit-wip-before-change-mode (not inhibit-magit-refresh))
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(magit-wip-commit-before-change files (concat " before " command)))
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(with-temp-buffer
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(insert patch)
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(magit-run-git-with-input
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"apply" args "-p0"
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(unless (magit-diff-context-p) "--unidiff-zero")
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"--ignore-space-change" "-"))
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(unless inhibit-magit-refresh
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(when magit-wip-after-apply-mode
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(magit-wip-commit-after-apply files (concat " after " command)))
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(magit-refresh))))
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(defun magit-apply--get-selection ()
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(or (magit-region-sections 'hunk 'file)
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(let ((section (magit-current-section)))
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(pcase (magit-section-type section)
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((or `hunk `file) section)
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((or `staged `unstaged `untracked
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`stashed-index `stashed-worktree `stashed-untracked)
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(magit-section-children section))
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(_ (user-error "Cannot apply this, it's not a change"))))))
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(defun magit-apply--get-diffs (sections)
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(magit-section-case
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([file diffstat]
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(--map (or (magit-get-section
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(append `((file . ,(magit-section-value it)))
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(magit-section-ident magit-root-section)))
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(error "Cannot get required diff headers"))
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sections))
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(t sections)))
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;;;; Stage
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(defun magit-stage ()
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"Add the change at point to the staging area."
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(interactive)
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(--when-let (magit-apply--get-selection)
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(pcase (list (magit-diff-type) (magit-diff-scope))
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(`(untracked ,_) (magit-stage-untracked))
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(`(unstaged region) (magit-apply-region it "--cached"))
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(`(unstaged hunk) (magit-apply-hunk it "--cached"))
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(`(unstaged hunks) (magit-apply-hunks it "--cached"))
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(`(unstaged file) (magit-stage-1 "-u" (list (magit-section-value it))))
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(`(unstaged files) (magit-stage-1 "-u" (magit-region-values)))
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(`(unstaged list) (magit-stage-1 "-u"))
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(`(staged ,_) (user-error "Already staged"))
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(`(committed ,_) (user-error "Cannot stage committed changes"))
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(`(undefined ,_) (user-error "Cannot stage this change")))))
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;;;###autoload
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(defun magit-stage-file (file)
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"Stage all changes to FILE.
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With a prefix argument or when there is no file at point ask for
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the file to be staged. Otherwise stage the file at point without
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requiring confirmation."
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(interactive
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(let* ((atpoint (magit-section-when (file)))
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(current (magit-file-relative-name))
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(choices (nconc (magit-modified-files)
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(magit-untracked-files)))
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(default (car (member (or atpoint current) choices))))
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(list (if (or current-prefix-arg (not default))
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(magit-completing-read "Stage file" choices
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nil t nil nil default)
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default))))
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(magit-with-toplevel
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(magit-stage-1 nil (list file))))
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;;;###autoload
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(defun magit-stage-modified (&optional all)
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"Stage all changes to files modified in the worktree.
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Stage all new content of tracked files and remove tracked files
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that no longer exist in the working tree from the index also.
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With a prefix argument also stage previously untracked (but not
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ignored) files.
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\('git add --update|--all .')."
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(interactive (progn (unless (or (not (magit-anything-staged-p))
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(magit-confirm 'stage-all-changes))
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(user-error "Abort"))
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(list current-prefix-arg)))
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(magit-with-toplevel
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(magit-stage-1 (if all "--all" "-u"))))
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(defun magit-stage-1 (arg &optional files)
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(magit-wip-commit-before-change files " before stage")
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(magit-run-git "add" arg (if files (cons "--" files) "."))
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(when magit-auto-revert-mode
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(mapc #'magit-turn-on-auto-revert-mode-if-desired files))
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(magit-wip-commit-after-apply files " after stage"))
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(defun magit-stage-untracked ()
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(let* ((section (magit-current-section))
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(files (pcase (magit-diff-scope)
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(`file (list (magit-section-value section)))
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(`files (magit-region-values))
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(`list (magit-untracked-files))))
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plain repos)
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(dolist (file files)
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(if (magit-git-repo-p file t)
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(push file repos)
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(push file plain)))
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(magit-wip-commit-before-change files " before stage")
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(when plain
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(magit-run-git "add" "--" plain)
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(when magit-auto-revert-mode
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(mapc #'magit-turn-on-auto-revert-mode-if-desired plain)))
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(dolist (repo repos)
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(save-excursion
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(goto-char (magit-section-start
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(magit-get-section
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`((file . ,repo) (untracked) (status)))))
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(call-interactively 'magit-submodule-add)))
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(magit-wip-commit-after-apply files " after stage")))
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;;;; Unstage
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(defun magit-unstage ()
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"Remove the change at point from the staging area."
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(interactive)
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(--when-let (magit-apply--get-selection)
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(pcase (list (magit-diff-type) (magit-diff-scope))
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(`(untracked ,_) (user-error "Cannot unstage untracked changes"))
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(`(unstaged ,_) (user-error "Already unstaged"))
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(`(staged region) (magit-apply-region it "--reverse" "--cached"))
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(`(staged hunk) (magit-apply-hunk it "--reverse" "--cached"))
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(`(staged hunks) (magit-apply-hunks it "--reverse" "--cached"))
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(`(staged file) (magit-unstage-1 (list (magit-section-value it))))
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(`(staged files) (magit-unstage-1 (magit-region-values)))
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(`(staged list) (magit-unstage-all))
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(`(committed ,_) (if magit-unstage-committed
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(magit-reverse-in-index)
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(user-error "Cannot unstage committed changes")))
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(`(undefined ,_) (user-error "Cannot unstage this change")))))
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;;;###autoload
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(defun magit-unstage-file (file)
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"Unstage all changes to FILE.
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With a prefix argument or when there is no file at point ask for
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the file to be unstaged. Otherwise unstage the file at point
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without requiring confirmation."
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(interactive
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(let* ((atpoint (magit-section-when (file)))
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(current (magit-file-relative-name))
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(choices (magit-staged-files))
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(default (car (member (or atpoint current) choices))))
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(list (if (or current-prefix-arg (not default))
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(magit-completing-read "Unstage file" choices
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nil t nil nil default)
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default))))
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(magit-with-toplevel
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(magit-unstage-1 (list file))))
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(defun magit-unstage-1 (files)
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(magit-wip-commit-before-change files " before unstage")
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(if (magit-no-commit-p)
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(magit-run-git "rm" "--cached" "--" files)
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(magit-run-git "reset" "HEAD" "--" files))
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(magit-wip-commit-after-apply files " after unstage"))
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;;;###autoload
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(defun magit-unstage-all ()
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"Remove all changes from the staging area."
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(interactive)
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(when (or (and (not (magit-anything-unstaged-p))
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(not (magit-untracked-files)))
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(magit-confirm 'unstage-all-changes))
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(magit-wip-commit-before-change nil " before unstage")
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(magit-run-git "reset" "HEAD" "--")
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(magit-wip-commit-after-apply nil " after unstage")))
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;;;; Discard
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(defun magit-discard ()
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"Remove the change at point."
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(interactive)
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(--when-let (magit-apply--get-selection)
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(pcase (list (magit-diff-type) (magit-diff-scope))
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(`(committed ,_) (user-error "Cannot discard committed changes"))
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(`(undefined ,_) (user-error "Cannot discard this change"))
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(`(,_ region) (magit-discard-region it))
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(`(,_ hunk) (magit-discard-hunk it))
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(`(,_ hunks) (magit-discard-hunks it))
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(`(,_ file) (magit-discard-file it))
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(`(,_ files) (magit-discard-files it))
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(`(,_ list) (magit-discard-files it)))))
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(defun magit-discard-region (section)
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(when (magit-confirm 'discard "Discard region")
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(magit-discard-apply section 'magit-apply-region)))
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(defun magit-discard-hunk (section)
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(when (magit-confirm 'discard "Discard hunk")
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(magit-discard-apply section 'magit-apply-hunk)))
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(defun magit-discard-apply (section apply)
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(if (eq (magit-diff-type section) 'unstaged)
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(funcall apply section "--reverse")
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(if (magit-anything-unstaged-p
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nil (if (eq (magit-section-type section) 'file)
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(magit-section-value section)
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(magit-section-parent-value section)))
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(progn (let ((inhibit-magit-refresh t))
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(funcall apply section "--reverse" "--cached")
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(funcall apply section "--reverse"))
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(magit-refresh))
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(funcall apply section "--reverse" "--index"))))
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(defun magit-discard-hunks (sections)
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(when (magit-confirm 'discard
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(format "Discard %s hunks from %s"
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(length sections)
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(magit-section-parent-value (car sections))))
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(magit-discard-apply-n sections 'magit-apply-hunks)))
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(defun magit-discard-apply-n (sections apply)
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(let ((section (car sections)))
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(if (eq (magit-diff-type section) 'unstaged)
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(funcall apply sections "--reverse")
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(if (magit-anything-unstaged-p
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nil (if (eq (magit-section-type section) 'file)
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(magit-section-value section)
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(magit-section-parent-value section)))
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(progn (let ((inhibit-magit-refresh t))
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(funcall apply sections "--reverse" "--cached")
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(funcall apply sections "--reverse"))
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(magit-refresh))
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(funcall apply sections "--reverse" "--index")))))
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(defun magit-discard-file (section)
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(magit-discard-files (list section)))
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(defun magit-discard-files (sections)
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(let ((auto-revert-verbose nil)
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(type (magit-diff-type (car sections)))
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(status (magit-file-status))
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files delete resurrect rename discard discard-new resolve)
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(dolist (section sections)
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(let ((file (magit-section-value section)))
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(push file files)
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(pcase (cons (pcase type
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(`staged ?X)
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(`unstaged ?Y)
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(`untracked ?Z))
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(cddr (assoc file status)))
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(`(?Z) (--each (magit-untracked-files nil file)
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(push it delete)))
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((or `(?Z ?? ??) `(?Z ?! ?!)) (push file delete))
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((or `(?Z ?D ? ) `(,_ ?D ?D)) (push file delete))
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((or `(,_ ?U ,_) `(,_ ,_ ?U)) (push file resolve))
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(`(,_ ?A ?A) (push file resolve))
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(`(?X ?M ,(or ? ?M ?D)) (push section discard))
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(`(?Y ,_ ?M ) (push section discard))
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(`(?X ?A ?M ) (push file discard-new))
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(`(?X ?C ?M ) (push file discard-new))
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(`(?X ?A ,(or ? ?D)) (push file delete))
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(`(?X ?C ,(or ? ?D)) (push file delete))
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(`(?X ?D ,(or ? ?M )) (push file resurrect))
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(`(?Y ,_ ?D ) (push file resurrect))
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(`(?X ?R ,(or ? ?M ?D)) (push file rename)))))
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(unwind-protect
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(let ((inhibit-magit-refresh t))
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(magit-wip-commit-before-change files " before discard")
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(when resolve
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(dolist (file (nreverse resolve))
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(magit-checkout-stage file (magit-checkout-read-stage file))))
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(magit-discard-files--resurrect (nreverse resurrect))
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(magit-discard-files--delete (nreverse delete) status)
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(magit-discard-files--rename (nreverse rename) status)
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(magit-discard-files--discard (nreverse discard)
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(nreverse discard-new))
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(magit-wip-commit-after-apply files " after discard"))
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(magit-refresh))))
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(defun magit-discard-files--resurrect (files)
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(when (magit-confirm-files 'resurrect files)
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(if (eq (magit-diff-type) 'staged)
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(magit-call-git "reset" "--" files)
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(magit-call-git "checkout" "--" files))))
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(defun magit-discard-files--delete (files status)
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(when (if magit-delete-by-moving-to-trash
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(magit-confirm-files 'trash files)
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(magit-confirm-files 'delete files))
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(let ((delete-by-moving-to-trash magit-delete-by-moving-to-trash))
|
|
(dolist (file files)
|
|
(if (memq (magit-diff-type) '(unstaged untracked))
|
|
(dired-delete-file file dired-recursive-deletes
|
|
magit-delete-by-moving-to-trash)
|
|
(pcase (nth 3 (assoc file status))
|
|
(? (delete-file file t)
|
|
(magit-call-git "rm" "--cached" "--" file))
|
|
(?M (let ((temp (magit-git-string "checkout-index" "--temp" file)))
|
|
(string-match
|
|
(format "\\(.+?\\)\t%s" (regexp-quote file)) temp)
|
|
(rename-file (match-string 1 temp)
|
|
(setq temp (concat file ".~{index}~")))
|
|
(delete-file temp t))
|
|
(magit-call-git "rm" "--cached" "--force" "--" file))
|
|
(?D (magit-call-git "checkout" "--" file)
|
|
(delete-file file t)
|
|
(magit-call-git "rm" "--cached" "--force" "--" file))))))))
|
|
|
|
(defun magit-discard-files--rename (files status)
|
|
(when (magit-confirm 'rename "Undo rename %s" "Undo %i renames"
|
|
(mapcar (lambda (file)
|
|
(setq file (assoc file status))
|
|
(format "%s -> %s" (cadr file) (car file)))
|
|
files))
|
|
(dolist (file files)
|
|
(let ((orig (cadr (assoc file status))))
|
|
(if (file-exists-p file)
|
|
(magit-call-git "mv" file orig)
|
|
(magit-call-git "rm" "--cached" "--" file)
|
|
(magit-call-git "reset" "--" orig))))))
|
|
|
|
(defun magit-discard-files--discard (sections new-files)
|
|
(let ((files (mapcar #'magit-section-value sections)))
|
|
(when (magit-confirm-files
|
|
'discard (append files new-files)
|
|
(format "Discard %s changes in" (magit-diff-type)))
|
|
(if (eq (magit-diff-type (car sections)) 'unstaged)
|
|
(magit-call-git "checkout" "--" files)
|
|
(when new-files
|
|
(magit-call-git "add" "--" new-files)
|
|
(magit-call-git "reset" "--" new-files))
|
|
(let ((binaries (magit-staged-binary-files)))
|
|
(when binaries
|
|
(setq sections
|
|
(--filter (not (member (magit-section-value it) binaries))
|
|
sections)))
|
|
(if (= (length sections) 1)
|
|
(magit-discard-apply (car sections) 'magit-apply-diff)
|
|
(magit-discard-apply-n sections 'magit-apply-diffs))
|
|
(when binaries
|
|
(let ((modified (magit-modified-files t)))
|
|
(setq binaries (--separate (member it modified) binaries)))
|
|
(when (cadr binaries)
|
|
(magit-call-git "reset" "--" (cadr binaries)))
|
|
(when (car binaries)
|
|
(user-error
|
|
(concat
|
|
"Cannot discard staged changes to binary files, "
|
|
"which also have unstaged changes. Unstage instead.")))))))))
|
|
|
|
;;;; Reverse
|
|
|
|
(defun magit-reverse (&rest args)
|
|
"Reverse the change at point in the working tree."
|
|
(interactive (and current-prefix-arg (list "--3way")))
|
|
(--when-let (magit-apply--get-selection)
|
|
(pcase (list (magit-diff-type) (magit-diff-scope))
|
|
(`(untracked ,_) (user-error "Cannot reverse untracked changes"))
|
|
(`(unstaged ,_) (user-error "Cannot reverse unstaged changes"))
|
|
(`(,_ region) (magit-reverse-region it args))
|
|
(`(,_ hunk) (magit-reverse-hunk it args))
|
|
(`(,_ hunks) (magit-reverse-hunks it args))
|
|
(`(,_ file) (magit-reverse-file it args))
|
|
(`(,_ files) (magit-reverse-files it args))
|
|
(`(,_ list) (magit-reverse-files it args)))))
|
|
|
|
(defun magit-reverse-region (section args)
|
|
(when (magit-confirm 'reverse "Reverse region")
|
|
(apply 'magit-apply-region section "--reverse" args)))
|
|
|
|
(defun magit-reverse-hunk (section args)
|
|
(when (magit-confirm 'reverse "Reverse hunk")
|
|
(apply 'magit-apply-hunk section "--reverse" args)))
|
|
|
|
(defun magit-reverse-hunks (sections args)
|
|
(when (magit-confirm 'reverse
|
|
(format "Reverse %s hunks from %s"
|
|
(length sections)
|
|
(magit-section-parent-value (car sections))))
|
|
(magit-apply-hunks sections "--reverse" args)))
|
|
|
|
(defun magit-reverse-file (section args)
|
|
(magit-reverse-files (list section) args))
|
|
|
|
(defun magit-reverse-files (sections args)
|
|
(-let [(binaries sections)
|
|
(let ((bs (magit-staged-binary-files)))
|
|
(--separate (member (magit-section-value it) bs) sections))]
|
|
(when (magit-confirm-files 'reverse (mapcar #'magit-section-value sections))
|
|
(if (= (length sections) 1)
|
|
(magit-apply-diff (car sections) "--reverse" args)
|
|
(magit-apply-diffs sections "--reverse" args)))
|
|
(when binaries
|
|
(user-error "Cannot reverse binary files"))))
|
|
|
|
(defun magit-reverse-in-index (&rest args)
|
|
"Reverse the change at point in the index but not the working tree.
|
|
|
|
Use this command to extract a change from `HEAD', while leaving
|
|
it in the working tree, so that it can later be committed using
|
|
a separate commit. A typical workflow would be:
|
|
|
|
0. Optionally make sure that there are no uncommitted changes.
|
|
1. Visit the `HEAD' commit and navigate to the change that should
|
|
not have been included in that commit.
|
|
2. Type \"u\" (`magit-unstage') to reverse it in the index.
|
|
This assumes that `magit-unstage-committed-changes' is non-nil.
|
|
3. Type \"c e\" to extend `HEAD' with the staged changes,
|
|
including those that were already staged before.
|
|
4. Optionally stage the remaining changes using \"s\" or \"S\"
|
|
and then type \"c c\" to create a new commit."
|
|
(interactive)
|
|
(magit-reverse (cons "--cached" args)))
|
|
|
|
;;; magit-apply.el ends soon
|
|
(provide 'magit-apply)
|
|
;; Local Variables:
|
|
;; indent-tabs-mode: nil
|
|
;; End:
|
|
;;; magit-apply.el ends here
|